A graduated one piece wood or metal measuring instrument, used in pattern making. The graduations are adjusted to compensate for the shrinkage of metal casting. The shrinkage of cast metal varies and shrinkage rules are made in various graduations. For combination square "shrink" blades, see blade, combination square.
Classification: Other measuring or checking instruments, appliances and machines, nesoi in chapter 90
NSN 6150-01-418-1638
NSN 6105-00-444-0084
NSN 6650-01-619-9986
NSN 6320-01-161-6640
NSN 5960-01-010-3083
NSN 5925-01-419-6618
NSN 5950-01-598-5069
NSN 5935-01-650-4970
NSN 6620-01-197-8207
NSN 5965-01-135-3679
NSN 6320-01-470-6826
NSN 5998-00-287-6355